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[David <Rudder2@xxxxxxxxx>]

I can confirm that after hours of serching the internet and trying fixes
that passing i915.disable_power_well=0 on the kernel command line works
around the problem, letting audio play at the correct speed again.

I'm running a Shuttle SZ87R6 with Intel Core i7-4770K Intel Z87 Chipset
using on board video and audio.  The HDMI and Optical out is going to a
Pioneer Suround Sound System before the HDMI continues on to my
projector.

The S/PDIF works perfectly all the time but only has 2 channel audio
which is annoying so I wanted to use the HDMI of course.

I'm running KUbuntu 14.04 Trusty.

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https://bugs.launchpad.net/bugs/1288004

Title:
  hdmi audio is sped up/high pitched[Gazelle Professional, Intel Haswell
  HDMI, Digital Out, HDMI] Playback problem

Status in System76:
  Fix Released
Status in “alsa-driver” package in Ubuntu:
  Confirmed
Status in “alsa-driver” package in Debian:
  New

Bug description:
  Ubuntu 13.10
  Not sure which  package
  Sound comes through hdmi sounding like a chipmunks tune.

  ProblemType: Bug
  DistroRelease: Ubuntu 13.10
  Package: alsa-base 1.0.25+dfsg-0ubuntu4
  ProcVersionSignature: Ubuntu 3.11.0-17.31-generic 3.11.10.3
  Uname: Linux 3.11.0-17-generic x86_64
  ApportVersion: 2.12.5-0ubuntu2.2
  Architecture: amd64
  Date: Tue Mar  4 18:21:58 2014
  MarkForUpload: True
  PackageArchitecture: all
  SourcePackage: alsa-driver
  Symptom: audio
  Symptom_AlsaPlaybackTest: ALSA playback test through plughw:MID failed
  Symptom_Card: Built-in Audio - HDA Intel MID
  Symptom_Jack: Digital Out, HDMI
  Symptom_Type: None of the above
  Title: [Gazelle Professional, Intel Haswell HDMI, Digital Out, HDMI] Playback problem
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 01/15/2014
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 1.03.03RS76
  dmi.board.asset.tag: Tag 12345
  dmi.board.name: Gazelle Professional
  dmi.board.vendor: System76, Inc.
  dmi.board.version: gazp9
  dmi.chassis.asset.tag: No Asset Tag
  dmi.chassis.type: 9
  dmi.chassis.vendor: System76, Inc.
  dmi.chassis.version: gazp9
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr1.03.03RS76:bd01/15/2014:svnSystem76,Inc.:pnGazelleProfessional:pvrgazp9:rvnSystem76,Inc.:rnGazelleProfessional:rvrgazp9:cvnSystem76,Inc.:ct9:cvrgazp9:
  dmi.product.name: Gazelle Professional
  dmi.product.version: gazp9
  dmi.sys.vendor: System76, Inc.

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